style: Migrate to stable-only rustfmt configuration

- Remove nightly-only features from .rustfmt.toml and vendor/ss58-registry/rustfmt.toml
- Removed features: imports_granularity, wrap_comments, comment_width,
  reorder_impl_items, spaces_around_ranges, binop_separator,
  match_arm_blocks, trailing_semicolon, trailing_comma
- Format all 898 affected files with stable rustfmt
- Ensures long-term reliability without nightly toolchain dependency

pezkuwi/node/network/protocol/src/reputation.rs

@@ -74,10 +74,10 @@ impl UnifiedReputationChange {
 	/// Whether the reputation change is for good behavior.
 	pub const fn is_benefit(&self) -> bool {
 		match self {
-			Self::BenefitMajorFirst(_) |
-			Self::BenefitMajor(_) |
-			Self::BenefitMinorFirst(_) |
-			Self::BenefitMinor(_) => true,
+			Self::BenefitMajorFirst(_)
+			| Self::BenefitMajor(_)
+			| Self::BenefitMinorFirst(_)
+			| Self::BenefitMinor(_) => true,
 			_ => false,
 		}
 	}